EP0779757A2 - Mobile radio system with wired subscriber equipment - Google Patents
Mobile radio system with wired subscriber equipment Download PDFInfo
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- EP0779757A2 EP0779757A2 EP96402723A EP96402723A EP0779757A2 EP 0779757 A2 EP0779757 A2 EP 0779757A2 EP 96402723 A EP96402723 A EP 96402723A EP 96402723 A EP96402723 A EP 96402723A EP 0779757 A2 EP0779757 A2 EP 0779757A2
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- mobile radio
- subscriber
- switching center
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- interface circuit
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/04—Interfaces between hierarchically different network devices
- H04W92/14—Interfaces between hierarchically different network devices between access point controllers and backbone network device
Definitions
- WO 94/2 60 73 In order to provide wired subscriber connections in a mobile radio system, it is known from WO 94/2 60 73 to connect a mobile radio switching center of the mobile radio system to at least one private branch exchange to which wired subscriber terminals can be connected.
- One of the private branch exchange locations is part of a so-called "subscriber services arrangement" which also offers mobile radio subscribers the services which the branch exchange systems offer the subscribers on the line-bound subscriber terminals.
- subscriber services arrangement which also offers mobile radio subscribers the services which the branch exchange systems offer the subscribers on the line-bound subscriber terminals.
- W0 94/26073 only the principle is presented of connecting subscribers from line-bound subscriber terminals to a mobile switching center by means of private branch exchange systems. The means required for this in the mobile radio system, in particular in the mobile radio switching center, are not described in detail there.
- a mobile radio system is known to which wired subscriber terminals can be connected.
- a radio station is equipped with subscriber line interfaces, with a concentrator connected to it and with connected radio transceivers.
- the radio transceivers are in turn connected wirelessly to a base station of the mobile radio system. Accordingly, the radio station corresponds to a fixed terminal for several fixed participants. Although services are provided to these subscribers by the mobile radio network, a complex radio station is required for this.
- the object of the invention is to provide a simply constructed mobile radio system, to which line-bound subscribers have access, and to specify means for this.
- the object is achieved by a mobile radio switching center according to claim 1 and by a mobile radio system equipped therewith according to the secondary claim.
- the mobile radio switching center contains an interface circuit for connecting a concentrator which bundles a large number of subscriber connections for wired subscriber terminals.
- Each of the line-bound subscriber terminals is thus connected to the mobile radio switching center in such a way that it can treat the line-bound subscriber terminals in the same way as mobile radio terminals.
- the switching of call connections from and to subscribers within the mobile radio system is according to the invention by Mobile radio switching center carried out regardless of whether the subscriber uses a mobile terminal or one of the wired subscriber terminals.
- the mobile radio system according to the invention has a very simple structure, since only an interface circuit is required as a means for connecting the line-bound subscriber terminals. Elaborate resources such as a private branch exchange or several radio transceivers are not required.
- the figure shows a mobile radio system MRS which contains at least one mobile radio switching center MSC which is connected to a public telephone network PSTN. Furthermore, the mobile radio system contains a plurality of radio base station controllers connected to the mobile radio switching center and radio base stations connected thereto for the supply of radio cells, which together form the radio coverage area of the mobile radio system.
- two so-called basic subsystems BSS are shown in a simplified manner, each of which comprises a base station controller and a plurality of base stations. These basic subsystems are connected, for example, via PCM 30 connections to the mobile switching center MSC, which switches both call connections within the mobile radio system and call connections between the mobile radio system and the public telephone network.
- the mobile switching center contains a controlled switching network SWT, which works with both the basic subsystems BSS and public telephone network PSTN is connected.
- Processor-controlled control units PROC are used to control the switching network SWT, one of which is shown here by way of example.
- the MRS mobile radio system shown here should meet the requirements of the GSM standard for cellular mobile radio networks.
- the mobile radio system contains the following databases connected to the controlled switching matrix: a device database EIR, a home file HLR, an authentication center AUC and a visitor file VLR.
- the functions required in accordance with the GSM standard for these databases are not the subject of this invention and are only to be mentioned briefly here.
- Identifiers of the end devices used in the mobile radio system are stored in the device database EIR. Blocking notes are stored for these identifiers if end devices are reported as stolen and are therefore to be excluded from use within the mobile radio system.
- the home location file HLR essentially contains data about those subscribers of the mobile radio system who are in the area of responsibility of the mobile switching center MSC.
- subscriber profiles are stored which indicate which services the subscribers can and may use within the mobile radio system.
- the current location of each participant is also stored in the home location register HLR by means of a reference to the visitor location register responsible for this location.
- the main task of the authentication center AUC is to secure secret codes for the encryption of data transmitted over the radio paths.
- the visitor file VLR which is integrated in the mobile switching center MSC, stores subscriber data of the subscribers who are currently in the area of this mobile switching center and which are not stored in the home file HLR.
- the structure of the MRS mobile radio system described so far essentially corresponds to the structure of a cellular mobile radio system according to the GSM standard (GSM: Global System for Mobile Communication).
- GSM Global System for Mobile Communication
- the mobile radio switching center MSC is equipped according to the invention with an interface IF which is connected to the controlled switching network SWT and to which a concentrator FSU is connected, which has several subscriber connections for provides wired terminals T1 to Tn.
- the interface circuit IF is a processor-controlled circuit which simulates the connection of a basic subsystem with regard to the controlled switching matrix SWT.
- the connection of the interface circuit to the controlled switching matrix is thus comparable to a further connection of such a basic subsystem as one of the BSSs shown.
- the interface circuit simulates a multiplex connection, here for example a PCM 30 connection.
- the concentrator FSU is connected to the interface circuit IF via a multi-channel line (line bundle). Instead of a multi-channel line, a connection by means of an optical waveguide or by means of a radio transmission link is also conceivable. For this purpose, however, the interface circuit and the concentrator would also have to contain electro-optical converters or radio transceivers.
- the concentrator FSU now fuses the line bundle coming from the mobile radio switching center onto the various subscriber lines T1 to Tn. In the opposite direction, the subscriber connections are bundled using the concentrator.
- the concentrator FSU thus acts like a demultiplexer or a multiplexer.
- the concentrator is very simple to carry out and requires no further functions, in particular no switching functions.
- each of the subscriber connections is connected to the controlled switching matrix SWT via the concentrator FSU and via the interface circuit IF, each of these subscriber connections within the mobile switching center MSC is treated like a connection of a mobile subscriber.
- the home location register HLR manages each of these subscriber connections in the same way as a connection of a mobile subscriber.
- the mobile switching center MSC switches call connections to and from the subscribers on the line-bound terminals in the same way as call connections from and to mobile subscribers on mobile radio terminals (mobile subscriber terminals).
- each of the line-bound subscriber connections is assigned a subscriber identifier which is stored in the HLR home file.
- the subscriber number assigned to a subscriber terminal can advantageously be changed by providing this subscriber terminal with a reading device for reading storage means SIM, in which information for identifying the subscriber who is currently accessing this subscriber terminal is stored.
- the storage means is a so-called authorization card (subscriber identity module), which authorizes a subscriber to access the mobile radio system.
- the reading devices in the line-bound subscriber terminals T1 to Tn correspond to so-called card readers that can read these authorization cards.
- a subscriber can thus not only use any mobile subscriber terminal within the mobile radio system, but also any of the line-bound subscriber terminals T1 to Tn connected to the mobile radio switching center MSC.
- the subscriber terminals T1 to Tn connected to the concentrator FSU here form a group of subscriber terminals which is comparable to a group of mobile subscriber terminals which are located in a basic subsystem BSS.
- the Mobile radio switching center MSC with the interface circuit IF and the home file HLR are designed such that the subscribers on the line-bound subscriber terminals are treated in the same way as mobile subscribers within a basic subsystem.
- the group of line-bound subscriber terminals T1 to Tn connected to the mobile radio switching center MSC in accordance with the invention thus forms a “virtual basic subsystem”.
- a connection, as described above, of line-bound subscriber terminals to a mobile radio switching center can be used particularly advantageously where there is already an infrastructure for mobile subscribers, but an infrastructure that is easy to set up is also desired for line-bound subscribers.
- the network operator of the mobile radio system can also offer wired connections to the mobile subscribers.
- the subscriber By connecting such line-bound subscriber terminals, which contain a card reading device, the subscriber can log into the mobile radio system both via each mobile radio terminal and via these line-bound subscriber terminals using one and the same authorization card.
- the mobile radio network operator can thus also offer mobile radio-specific services to subscribers who are not in the radio coverage area of their mobile radio system.
- the invention is not only applicable, as described above, to cellular mobile radio networks, but also to all mobile radio systems which contain switching devices.
Abstract
Description
Um in einem Mobilfunksystem leitungsgebundene Teilnehmeranschlüsse bereitzustellen, ist aus W0 94/2 60 73 bekannt, eine Mobilfunkvermittlungsstelle des Mobilfunksystems mit mindestens einer privaten Nebenstellenanlage zu verbinden, an die leitungsgebundene Teilnehmerendgeräte anschließbar sind. Eine der privaten Nebenstellenalagen ist Teil eines sogenannten "subscriber services arrangement", das auch Mobilfunkteilnehmern die Dienste anbieten, die die Nebenstellenanlagen den Teilnehmern an den leitungsgebundenen Teilnehmerendgeräten anbieten. In W0 94/26073 wird lediglich das Prinzip vorgestellt, Teilnehmer von leitungsgebundenen Teilnehmerendgeräten mittels privater Nebenstellenanlagen an eine Mobilfunkvermittlungsstelle anzuschließen. Welche Mittel hierzu in dem Mobilfunksystem, insbesondere in der Mobilfunkvermittlungsstelle, benötigt werden, ist dort nicht näher beschrieben. Da in dem bekannten Mobilfunksystem die leitungsgebundenen Teilnehmeranschlüsse mittels privater Nebenstellenanlagen bereitgestellt werden, wird eine aufwendige Vermittlungstechnik benötigt. Außerdem sind an den leitungsgebundenen Teilnehmeranschlüssen lediglich solche Dienste verfügbar, die von den privaten Nebenstellenanlagen, nicht aber vom Mobilfunksystem selbst bereitgestellt werden.In order to provide wired subscriber connections in a mobile radio system, it is known from WO 94/2 60 73 to connect a mobile radio switching center of the mobile radio system to at least one private branch exchange to which wired subscriber terminals can be connected. One of the private branch exchange locations is part of a so-called "subscriber services arrangement" which also offers mobile radio subscribers the services which the branch exchange systems offer the subscribers on the line-bound subscriber terminals. In W0 94/26073, only the principle is presented of connecting subscribers from line-bound subscriber terminals to a mobile switching center by means of private branch exchange systems. The means required for this in the mobile radio system, in particular in the mobile radio switching center, are not described in detail there. Since in the known mobile radio system the line-bound subscriber lines are provided by means of private branch exchanges, complex switching technology is required. In addition, only those services are available on the line-bound subscriber lines that are provided by the private branch exchange systems, but not by the mobile radio system itself.
Aus dem Artikel "Feste Teilnehmeranschlüsse in Zellularfunksystemen" von J. M. Garcia Aguilera, erschienen in der Zeitschrift "Elektrisches Nachrichtenwesen", Ausgabe 1/1995, Alcatel Alsthom Publications S. A., Paris, ist ein Mobilfunksystem bekannt, an das leitungsgebundene Teilnehmerendgeräte angeschlossen werden können. Dazu wird dort eine Funkstation mit Teilnehmerleitungsschnittstellen, mit einem damit verbundenen Konzentrator und mit damit verbundenen Funksendeempfängern ausgestattet. Die Funksendeempfänger wiederum sind drahtlos mit einer Basisstation des Mobilfunksystems verbunden. Demnach entspricht die Funkstation einem ortsfesten Endgerät für mehrere ortsfeste Teilnehmer. Zwar werden diesen Teilnehmern Dienste durch das Mobilfunknetz bereitgestellt, jedoch wird dazu eine aufwendig aufgebaute Funkstation benötigt.From the article "Fixed Subscriber Connections in Cellular Radio Systems" by J.M. Garcia Aguilera, published in the magazine "Electrical News",
Aufgabe der Erfindung ist es, ein einfach aufgebautes Mobilfunksystem, auf das leitungsgebundene Teilnehmer Zugriff haben, und Mittel dafür anzugeben.The object of the invention is to provide a simply constructed mobile radio system, to which line-bound subscribers have access, and to specify means for this.
Gelöst wird die Aufgabe durch eine Mobilfunkvermittlungsstelle nach Anspruch 1 und durch ein damit ausgestattetes Mobilfunksystem nach dem nebengeordneten Anspruch.The object is achieved by a mobile radio switching center according to
Demnach enthält die erfindungsgemäße Mobilfunkvermittlungsstelle eine Schnittstellenschaltung zum Anschluß eines Konzentrators, der eine Vielzahl von Teilnehmeranschlüssen für leitungsgebundene Teilnehmerendgeräte bündelt.Accordingly, the mobile radio switching center according to the invention contains an interface circuit for connecting a concentrator which bundles a large number of subscriber connections for wired subscriber terminals.
Somit wird jedes der leitungsgebundenen Teilnehmerendgeräte an die Mobilfunkvermittlungsstelle so angeschlossen, daß diese die leitungsgebundenen Teilnehmerendgeräte gleich wie Mobilfunkendgeräte behandeln kann. Die Vermittlung von Rufverbindungen von und zu Teilnehmern innerhalb des Mobilfunksystems wird erfindungsgemäß von der Mobilfunkvermittlungsstelle durchgeführt unabhängig davon, ob der Teilnehmer ein Mobilfunkendgerät oder eines der leitungsgebundenen Teilnehmerendgeräte benutzt. Das erfindungsgemäße Mobilfunksystem ist sehr einfach aufgebaut, da hier als Mittel zum Anschluß der leitungsgebundenen Teilnehmerendgeräte lediglich eine Schnittstellenschaltung benötigt wird. Aufwendige Mittel wie etwa eine Nebenstellenanlage oder mehrere Funksendeempfänger sind nicht erforderlich.Each of the line-bound subscriber terminals is thus connected to the mobile radio switching center in such a way that it can treat the line-bound subscriber terminals in the same way as mobile radio terminals. The switching of call connections from and to subscribers within the mobile radio system is according to the invention by Mobile radio switching center carried out regardless of whether the subscriber uses a mobile terminal or one of the wired subscriber terminals. The mobile radio system according to the invention has a very simple structure, since only an interface circuit is required as a means for connecting the line-bound subscriber terminals. Elaborate resources such as a private branch exchange or several radio transceivers are not required.
Vorteilhafte Ausgestaltungen der Erfindung sind den Unteransprüchen zu entnehmen.Advantageous embodiments of the invention can be found in the subclaims.
Im weiteren wird die Erfindung anhand eines Ausführungsbeispiels und mit Hilfe der einzigen Figur beschrieben, die schematisch den Aufbau eines Mobilfunksystems mittels einer erfindungsgemäßen Mobilfunkvermittlungsstelle zeigt.The invention is described below with the aid of an exemplary embodiment and with the aid of the single figure which schematically shows the structure of a mobile radio system by means of a mobile radio switching center according to the invention.
In der Figur ist ein Mobilfunksystem MRS dargestellt, das zumindest eine Mobilfunkvermittlungsstelle MSC enthält, die mit einem öffentlichen Telefonnetz PSTN verbunden ist. Weiterhin enthält das Mobilfunksystem mehrere mit der Mobilfunkvermittlungsstelle verbundene Funkfeststationssteuerungen und daran angeschlossene Funkfeststationen zur Versorgung von Funkzellen, die zusammengenommen den Funkversorgungsbereichs des Mobilfunksystems bilden. In der Figur sind vereinfachend zwei sogenannte Basissubsysteme BSS dargestellt, die jeweils eine Funkfeststationssteuerung und mehrere Funkfeststationen umfassen. Diese Basissubsysteme sind etwa über PCM 30-Verbindungen mit der Mobilfunkvermittlungsstelle MSC verbunden, die sowohl Rufverbindungen innerhalb des Mobilfunksystems als auch Rufverbindungen zwischen dem Mobilfunksystem und dem öffentlichen Telefonnetz vermittelt. Zur Vermittlung solcher Rufverbindungen enthält die Mobilfunkvermittlungsstelle ein gesteuertes Koppelfeld SWT, das sowohl mit den Basissubsystemen BSS als auch mit dem öffentlichen Telefonnetz PSTN verbunden ist. Zur Steuerung des Koppelfeldes SWT werden prozessorgesteuerte Steuereinheiten PROC eingesetzt, von denen eine hier beispielshaft dargestellt ist.The figure shows a mobile radio system MRS which contains at least one mobile radio switching center MSC which is connected to a public telephone network PSTN. Furthermore, the mobile radio system contains a plurality of radio base station controllers connected to the mobile radio switching center and radio base stations connected thereto for the supply of radio cells, which together form the radio coverage area of the mobile radio system. In the figure, two so-called basic subsystems BSS are shown in a simplified manner, each of which comprises a base station controller and a plurality of base stations. These basic subsystems are connected, for example, via PCM 30 connections to the mobile switching center MSC, which switches both call connections within the mobile radio system and call connections between the mobile radio system and the public telephone network. To switch such call connections, the mobile switching center contains a controlled switching network SWT, which works with both the basic subsystems BSS and public telephone network PSTN is connected. Processor-controlled control units PROC are used to control the switching network SWT, one of which is shown here by way of example.
Das hier dargestellte Mobilfunksystem MRS soll den Anforderungen nach dem GSM-Standard für zellulare Mobilfunknetze entsprechen. Dazu enthält das Mobilfunksystem folgende mit dem gesteuerten Koppelfeld verbundene Datenbanken: eine Gerätedatenbank EIR, eine Heimatdatei HLR, eine Authentifizierungszentrale AUC sowie eine Besucherdatei VLR. Die gemäß dem GSM-Standard geforderten Funktionen für diese Datenbanken sind nicht Gegenstand dieser Erfindung und sollen hier nur kurz angesprochen werden. In der Gerätedatenbank EIR sind Kennungen der in dem Mobilfunksystem verwendeten Endgeräte gespeichert. Zu diesen Kennungen werden etwa Sperrvermerke gespeichert, falls Endgeräte als gestohlen gemeldet werden und daher von einer Benutzung innerhalb des Mobilfunksystems ausgeschlossen werden sollen. Die Heimatdatei HLR enthält im Wesentlichen Daten über diejenigen Teilnehmer des Mobilfunksystems, die sich im Zuständigkeitsbereich der Mobilvermittlungsstelle MSC befinden. In der Heimatdatei HLR werden zum Beispiel Teilnehmerprofile abgespeichert, die angeben, welche Dienste die Teilnehmer innerhalb des Mobilfunksystems nutzen können und dürfen. In der Heimatdatei HLR ist auch der aktuelle Aufenthaltsort eines jeden Teilnehmers gespeichert durch einen Verweis auf die Besucherdatei, die für diesen Aufenthaltsort zuständig ist. Die Aufgabe der Authentifizierungszentrale AUC liegt im Wesentlichen darin, Geheimcodes für die Verschlüsselung von über die Funkwege übertragenen Daten zu sichern. Die Besucherdatei VLR, die in der Mobilfunkvermittlungsstelle MSC integriert ist, speichert Teilnehmerdaten von den Teilnehmern, die sich momentan im Bereich dieser Mobilfunkvermittlungsstelle befinden und die nicht in der Heimatdatei HLR gespeichert sind.The MRS mobile radio system shown here should meet the requirements of the GSM standard for cellular mobile radio networks. For this purpose, the mobile radio system contains the following databases connected to the controlled switching matrix: a device database EIR, a home file HLR, an authentication center AUC and a visitor file VLR. The functions required in accordance with the GSM standard for these databases are not the subject of this invention and are only to be mentioned briefly here. Identifiers of the end devices used in the mobile radio system are stored in the device database EIR. Blocking notes are stored for these identifiers if end devices are reported as stolen and are therefore to be excluded from use within the mobile radio system. The home location file HLR essentially contains data about those subscribers of the mobile radio system who are in the area of responsibility of the mobile switching center MSC. In the home file HLR, for example, subscriber profiles are stored which indicate which services the subscribers can and may use within the mobile radio system. The current location of each participant is also stored in the home location register HLR by means of a reference to the visitor location register responsible for this location. The main task of the authentication center AUC is to secure secret codes for the encryption of data transmitted over the radio paths. The visitor file VLR, which is integrated in the mobile switching center MSC, stores subscriber data of the subscribers who are currently in the area of this mobile switching center and which are not stored in the home file HLR.
Der bisher beschriebene Aufbau des Mobilfunksystems MRS entspricht im Wesentlichen dem Aufbau eines zellularen Mobilfunksystems nach dem GSM-Standard (GSM: Global System for Mobile Communication). Um nun das Mobilfunksystem nicht nur für mobile Teilnehmer sondern auch für leitungsgebundene Teilnehmer zugänglich zu machen, wird erfindungsgemäß die Mobilfunkvermittlungsstelle MSC mit einer Schnittstelle IF ausgestattet, die mit dem gesteuerten Koppelfeld SWT verbunden ist und an die ein Konzentrator FSU angeschlossen ist, der mehrere Teilnehmeranschlüsse für leitungsgebundene Endgeräte T1 bis Tn bereitstellt.The structure of the MRS mobile radio system described so far essentially corresponds to the structure of a cellular mobile radio system according to the GSM standard (GSM: Global System for Mobile Communication). In order to make the mobile radio system accessible not only for mobile subscribers but also for wired subscribers, the mobile radio switching center MSC is equipped according to the invention with an interface IF which is connected to the controlled switching network SWT and to which a concentrator FSU is connected, which has several subscriber connections for provides wired terminals T1 to Tn.
Die Schnittstellenschaltung IF ist eine prozessorgesteuerte Schaltung, die hinsichtlich des gesteuerten Koppelfeldes SWT den Anschluß eines Basissubsystems nachbildet. Somit ist der Anschluß der Schnittstellenschaltung an dem gesteuerten Koppelfeld vergleichbar mit einem weiteren Anschluß eines solchen Basissubsystemes, wie eines der dargestellten BSS. Hinsichtlich des Konzentrators bildet die Schnittstellenschaltung einen Multiplexanschluß nach, hier beispielsweise einen PCM 30-Anschluß. Der Konzentrator FSU ist über eine mehrkanalige Leitung (Leitungsbündel) mit der Schnittstellenschaltung IF verbunden. Anstelle einer mehrkanaligen Leitung ist auch eine Verbindung mittels eines optischen Wellenleiters oder mittels einer Funkübertragungsstrecke denkbar. Dazu müßten jedoch die Schnittstellenschaltung und der Konzentrator zusätzlich elektrooptische Wandler bzw. Funksendeempfänger enthalten. Der Konzentrator FSU fächert nun das von der Mobilfunkvermittlungsstelle kommende Leitungsbündel auf die verschiedenen Teilnehmeranschlüsse T1 bis Tn auf. In umgekehrter Richtung werden die Teilnehmeranschlüsse mittels des Konzentrators gebündelt. Somit wirkt der Konzentrator FSU wie ein Demultiplexer bzw. ein Multiplexer. Der Konzentrator ist sehr einfach ausführbar und benötigt keine weiteren Funktionen, insbesondere keine Vermittlungsfunktionen.The interface circuit IF is a processor-controlled circuit which simulates the connection of a basic subsystem with regard to the controlled switching matrix SWT. The connection of the interface circuit to the controlled switching matrix is thus comparable to a further connection of such a basic subsystem as one of the BSSs shown. With regard to the concentrator, the interface circuit simulates a multiplex connection, here for example a PCM 30 connection. The concentrator FSU is connected to the interface circuit IF via a multi-channel line (line bundle). Instead of a multi-channel line, a connection by means of an optical waveguide or by means of a radio transmission link is also conceivable. For this purpose, however, the interface circuit and the concentrator would also have to contain electro-optical converters or radio transceivers. The concentrator FSU now fuses the line bundle coming from the mobile radio switching center onto the various subscriber lines T1 to Tn. In the opposite direction, the subscriber connections are bundled using the concentrator. The concentrator FSU thus acts like a demultiplexer or a multiplexer. The concentrator is very simple to carry out and requires no further functions, in particular no switching functions.
Da jeder der Teilnehmeranschlüsse über den Konzentrator FSU und über die Schnittstellenschaltung IF an dem gesteuerten Koppelfeld SWT angeschlossen ist, wird jeder dieser Teilnehmeranschlüsse innerhalb der Mobilfunkvermittlungsstelle MSC wie ein Anschluß eines mobilen Teilnehmers behandelt. Erfindungsgemäß verwaltet die Heimatdatei HLR dazu jeden dieser Teilnehmeranschlüsse gleich wie einen Anschluß eines mobilen Teilnehmers. Die Mobilfunkvermittlungsstelle MSC vermittelt Rufverbindungen von und zu den Teilnehmern an den leitungsgebundenen Endgeräten gleich wie Rufverbindungen von und zu mobilen Teilnehmern an Mobilfunkendgeräten (mobile Teilnehmerendgeräte). Dazu ist jedem der leitungsgebundenen Teilnehmeranschlüsse eine Teilnehmerkennung zugeordnet, die in der Heimatdatei HLR abgespeichert ist.Since each of the subscriber connections is connected to the controlled switching matrix SWT via the concentrator FSU and via the interface circuit IF, each of these subscriber connections within the mobile switching center MSC is treated like a connection of a mobile subscriber. According to the invention, the home location register HLR manages each of these subscriber connections in the same way as a connection of a mobile subscriber. The mobile switching center MSC switches call connections to and from the subscribers on the line-bound terminals in the same way as call connections from and to mobile subscribers on mobile radio terminals (mobile subscriber terminals). For this purpose, each of the line-bound subscriber connections is assigned a subscriber identifier which is stored in the HLR home file.
Vorteilhaft kann nun die einem Teilnehmerendgerät zugeordnete Teilnehmernummer geändert werden, indem dieses Teilnehmerendgerät mit einer Lesevorrichtung zum Lesen von Speichermitteln SIM versehen ist, in denen Angaben zur Identifikation des Teilnehmers gespeichert sind, der momentan auf dieses Teilnehmerendgerät zugreift. Hier ist das Speichermittel eine sogenannte Berechtigungskarte (subscriber identity module), die einen Teilnehmer zum Zugriff auf das Mobilfunksystem berechtigt. Die Lesevorrichtungen in den leitungsgebundenen Teilnehmerendgeräten T1 bis Tn entsprechen sogenannten Kartenlesern, die diese Berechtigungskarten lesen können. Ein Teilnehmer kann somit nicht nur jedes beliebige mobile Teilnehmerendgerät innerhalb des Mobilfunksystems nutzen, sondern auch jedes der mit der Mobilfunkvermittlungsstelle MSC verbundenen leitungsgebundenen Teilnehmerendgeräten T1 bis Tn. Somit können durch Ausstattung der leitungsgebundenen Teilnehmerendgeräte T1 bis Tn diese gleich wie mobile Teilnehmerendgeräte von den Teilnehmern genutzt werden. Die an den Konzentrator FSU angeschlossenen Teilnehmerendgeräte T1 bis Tn bilden hier eine Gruppe von Teilnehmerendgeräten, die vergleichbar ist einer Gruppe von mobilen Teilnehmerendgeräten, die sich in einem Basissubsystem BSS befinden. Die Mobilfunkvermittlungsstelle MSC mit der Schnittstellenschaltung IF und die Heimatdatei HLR sind so ausgeführt, daß die Teilnehmer an den leitungsgebundenen Teilnehmerendgeräten gleich wie mobile Teilnehmer innerhalb eines Basissubsystemes behandelt werden. Somit bildet die erfindungsgemäß an die Mobilfunkvermittlungsstelle MSC angeschlossene Gruppe von leitungsgebundenen Teilnehmerendgeräten T1 bis Tn ein "virtuelles Basissubsystem".The subscriber number assigned to a subscriber terminal can advantageously be changed by providing this subscriber terminal with a reading device for reading storage means SIM, in which information for identifying the subscriber who is currently accessing this subscriber terminal is stored. Here the storage means is a so-called authorization card (subscriber identity module), which authorizes a subscriber to access the mobile radio system. The reading devices in the line-bound subscriber terminals T1 to Tn correspond to so-called card readers that can read these authorization cards. A subscriber can thus not only use any mobile subscriber terminal within the mobile radio system, but also any of the line-bound subscriber terminals T1 to Tn connected to the mobile radio switching center MSC. Thus, by equipping the line-bound subscriber terminals T1 to Tn, the subscribers can use them just like mobile subscriber terminals . The subscriber terminals T1 to Tn connected to the concentrator FSU here form a group of subscriber terminals which is comparable to a group of mobile subscriber terminals which are located in a basic subsystem BSS. The Mobile radio switching center MSC with the interface circuit IF and the home file HLR are designed such that the subscribers on the line-bound subscriber terminals are treated in the same way as mobile subscribers within a basic subsystem. The group of line-bound subscriber terminals T1 to Tn connected to the mobile radio switching center MSC in accordance with the invention thus forms a “virtual basic subsystem”.
Ein wie oben beschriebener Anschluß leitungsgebundener Teilnehmerendgeräte an eine Mobilfunkvermittlungsstelle ist besonders dort vorteilhaft einsetzbar, wo bereits eine Infrastruktur für mobile Teilnehmer besteht, jedoch zusätzlich eine einfach aufzubauende Infrastruktur für leitungsgebundene Teilnehmer gewünscht wird. Somit kann beispielsweise der Netzbetreiber des Mobilfunksystems den mobilen Teilnehmern auch leitungsgebundene Anschlüsse anbieten. Durch Anschluß von solchen leitungsgebundenen Teilnehmerendgeräten, die eine Kartenleseeinrichtung enthalten, kann sich der Teilnehmer sowohl über jedes Mobilfunkendgerät als auch über diese leitungsgebundenen Teilnehmerendgeräte mittels ein und derselben Berechtigungskarte in das Mobilfunksystem einbuchen.A connection, as described above, of line-bound subscriber terminals to a mobile radio switching center can be used particularly advantageously where there is already an infrastructure for mobile subscribers, but an infrastructure that is easy to set up is also desired for line-bound subscribers. Thus, for example, the network operator of the mobile radio system can also offer wired connections to the mobile subscribers. By connecting such line-bound subscriber terminals, which contain a card reading device, the subscriber can log into the mobile radio system both via each mobile radio terminal and via these line-bound subscriber terminals using one and the same authorization card.
Es ist auch denkbar, den Konzentrator weitab von der Mobilfunkvermittlungsstelle dort zu installieren, wo eine Funkversorgung aus technischen Gründen oder aus kommerziellen Gründen nicht angezeigt ist. Somit kann der Mobilfunknetzbetreiber auch Teilnehmern, die sich nicht im Funkversorgungsbereich seines Mobilfunksystemes befinden, mobilfunkspezifische Dienste anbieten.It is also conceivable to install the concentrator far from the mobile switching center where radio coverage is not indicated for technical reasons or for commercial reasons. The mobile radio network operator can thus also offer mobile radio-specific services to subscribers who are not in the radio coverage area of their mobile radio system.
Die Erfindung ist nicht nur, wie oben beschrieben, auf zellulare Mobilfunknetze anwendbar, sondern auf alle Mobilfunksysteme, die Vermittlungseinrichtungen enthalten.The invention is not only applicable, as described above, to cellular mobile radio networks, but also to all mobile radio systems which contain switching devices.
Claims (9)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE19547110 | 1995-12-16 | ||
DE19547110A DE19547110A1 (en) | 1995-12-16 | 1995-12-16 | Mobile radio system with wired subscriber lines |
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EP0779757A2 true EP0779757A2 (en) | 1997-06-18 |
EP0779757A3 EP0779757A3 (en) | 1999-07-21 |
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EP96402723A Withdrawn EP0779757A3 (en) | 1995-12-16 | 1996-12-12 | Mobile radio system with wired subscriber equipment |
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US (1) | US6122508A (en) |
EP (1) | EP0779757A3 (en) |
JP (1) | JPH09289688A (en) |
CN (1) | CN1096203C (en) |
CA (1) | CA2192705A1 (en) |
DE (1) | DE19547110A1 (en) |
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Also Published As
Publication number | Publication date |
---|---|
EP0779757A3 (en) | 1999-07-21 |
CN1096203C (en) | 2002-12-11 |
CN1159128A (en) | 1997-09-10 |
CA2192705A1 (en) | 1997-06-17 |
US6122508A (en) | 2000-09-19 |
DE19547110A1 (en) | 1997-06-19 |
JPH09289688A (en) | 1997-11-04 |
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